Package org.cqframework.cql.elm.execution

Class Distinct

java.lang.Object

org.opencds.cqf.cql.engine.elm.execution.Executable

org.cqframework.cql.elm.execution.Element

org.cqframework.cql.elm.execution.Expression

org.cqframework.cql.elm.execution.OperatorExpression

org.cqframework.cql.elm.execution.UnaryExpression

org.cqframework.cql.elm.execution.Distinct

All Implemented Interfaces:

org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2

Direct Known Subclasses:

DistinctEvaluator

public class Distinct
extends UnaryExpression
implements org.jvnet.jaxb2_commons.lang.Equals2, org.jvnet.jaxb2_commons.lang.HashCode2, org.jvnet.jaxb2_commons.lang.ToString2

The Distinct operator takes a list of elements and returns a list containing only the unique elements within the input. For example, given the list of integers { 1, 1, 1, 2, 2, 3, 4, 4 }, the result of Distinct would be { 1, 2, 3, 4 }. The operator uses equality comparison semantics as defined in the Equal operator, with the exception that nulls are considered equal for the purposes of distinct determination. This means that multiple nulls in the input will result in a single null in the output. If the source argument is null, the result is null.

Java class for Distinct complex type.

The following schema fragment specifies the expected content contained within this class.

 <complexType name="Distinct">
   <complexContent>
     <extension base="{urn:hl7-org:elm:r1}UnaryExpression">
     </extension>
   </complexContent>
 </complexType>
 

Field Summary

Fields inherited from class org.cqframework.cql.elm.execution.UnaryExpression

operand

Fields inherited from class org.cqframework.cql.elm.execution.OperatorExpression

signature

Fields inherited from class org.cqframework.cql.elm.execution.Element

annotation, localId, locator, resultTypeName, resultTypeSpecifier

Constructor Summary

Constructors

Constructor	Description
Distinct()

Method Summary

Modifier and Type	Method	Description
StringBuilder	append(org.jvnet.jaxb2_commons.locator.ObjectLocator locator, StringBuilder buffer, org.jvnet.jaxb2_commons.lang.ToStringStrategy2 strategy)
StringBuilder	appendFields(org.jvnet.jaxb2_commons.locator.ObjectLocator locator, StringBuilder buffer, org.jvnet.jaxb2_commons.lang.ToStringStrategy2 strategy)
boolean	equals(Object object)
boolean	equals(org.jvnet.jaxb2_commons.locator.ObjectLocator thisLocator, org.jvnet.jaxb2_commons.locator.ObjectLocator thatLocator, Object object, org.jvnet.jaxb2_commons.lang.EqualsStrategy2 strategy)
int	hashCode()
int	hashCode(org.jvnet.jaxb2_commons.locator.ObjectLocator locator, org.jvnet.jaxb2_commons.lang.HashCodeStrategy2 strategy)
String	toString()
Distinct	withAnnotation(Collection<CqlToElmBase> values)
Distinct	withAnnotation(CqlToElmBase... values)
Distinct	withLocalId(String value)
Distinct	withLocator(String value)
Distinct	withOperand(Expression value)
Distinct	withResultTypeName(QName value)
Distinct	withResultTypeSpecifier(TypeSpecifier value)
Distinct	withSignature(Collection<TypeSpecifier> values)
Distinct	withSignature(TypeSpecifier... values)

Methods inherited from class org.cqframework.cql.elm.execution.UnaryExpression

getOperand, setOperand

Methods inherited from class org.cqframework.cql.elm.execution.OperatorExpression

getSignature

Methods inherited from class org.cqframework.cql.elm.execution.Element

getAnnotation, getLocalId, getLocator, getResultTypeName, getResultTypeSpecifier, setLocalId, setLocator, setResultTypeName, setResultTypeSpecifier

Methods inherited from class org.opencds.cqf.cql.engine.elm.execution.Executable

evaluate, internalEvaluate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

Distinct

public Distinct()

Method Details

withOperand

public Distinct withOperand(Expression value)

Overrides:

withOperand in class UnaryExpression

withSignature

public Distinct withSignature(TypeSpecifier... values)

Overrides:

withSignature in class UnaryExpression

withSignature

public Distinct withSignature(Collection<TypeSpecifier> values)

Overrides:

withSignature in class UnaryExpression

withAnnotation

public Distinct withAnnotation(CqlToElmBase... values)

Overrides:

withAnnotation in class UnaryExpression

withAnnotation

public Distinct withAnnotation(Collection<CqlToElmBase> values)

Overrides:

withAnnotation in class UnaryExpression

withResultTypeSpecifier

public Distinct withResultTypeSpecifier(TypeSpecifier value)

Overrides:

withResultTypeSpecifier in class UnaryExpression

withLocalId

public Distinct withLocalId(String value)

Overrides:

withLocalId in class UnaryExpression

withLocator

public Distinct withLocator(String value)

Overrides:

withLocator in class UnaryExpression

withResultTypeName

public Distinct withResultTypeName(QName value)

Overrides:

withResultTypeName in class UnaryExpression

equals

public boolean equals(org.jvnet.jaxb2_commons.locator.ObjectLocator thisLocator,
 org.jvnet.jaxb2_commons.locator.ObjectLocator thatLocator,
 Object object,
 org.jvnet.jaxb2_commons.lang.EqualsStrategy2 strategy)

Specified by:

equals in interface org.jvnet.jaxb2_commons.lang.Equals2

Overrides:

equals in class UnaryExpression

equals

public boolean equals(Object object)

Overrides:

equals in class UnaryExpression

hashCode

public int hashCode(org.jvnet.jaxb2_commons.locator.ObjectLocator locator,
 org.jvnet.jaxb2_commons.lang.HashCodeStrategy2 strategy)

Specified by:

hashCode in interface org.jvnet.jaxb2_commons.lang.HashCode2

Overrides:

hashCode in class UnaryExpression

hashCode

public int hashCode()

Overrides:

hashCode in class UnaryExpression

toString

public String toString()

Overrides:

toString in class UnaryExpression

append

public StringBuilder append(org.jvnet.jaxb2_commons.locator.ObjectLocator locator,
 StringBuilder buffer,
 org.jvnet.jaxb2_commons.lang.ToStringStrategy2 strategy)

Specified by:

append in interface org.jvnet.jaxb2_commons.lang.ToString2

Overrides:

append in class UnaryExpression

appendFields

public StringBuilder appendFields(org.jvnet.jaxb2_commons.locator.ObjectLocator locator,
 StringBuilder buffer,
 org.jvnet.jaxb2_commons.lang.ToStringStrategy2 strategy)

Specified by:

appendFields in interface org.jvnet.jaxb2_commons.lang.ToString2

Overrides:

appendFields in class UnaryExpression